Statement: The Building Block of Logical Discourse
A statement is a declarative sentence that asserts a fact, capable of…
Square of Opposition
The Square of Opposition illustrates logical relations between A, E, I, and…
Soundness in Logic
Soundness ensures that a logical system's derived theorems are always true under…
Sound Deductive Argument
A sound deductive argument is both valid and has true premises. This…
Sorites Series: Navigating Vagueness and Paradox
A sorites series presents a sequence of propositions used to illustrate the…
Sorites Paradox: The Paradox of the Heap
The Sorites paradox, or paradox of the heap, arises from vague predicates.…
Sophisma: Challenging Logic with Paradox
A sophisma is a puzzling or paradoxical question, historically used in medieval…
Skolem Paradox
The Skolem paradox highlights a contradiction between intuition and the Skolem-Lowenheim theorem.…
Skolem Normal Form in First-Order Logic
Skolem Normal Form (SNF) simplifies first-order logic by eliminating existential quantifiers. It…
Skolem-Lowenheim Theorem
A fundamental theorem in first-order logic. It asserts that if a theory…